Gearing for lathes, &amp;c.



R. LB BLOND & W. P. GROENE.

GEARING FOR LATHES, 6m} APPLICATION FILED JUNE 18, 1909.

980,973. A Patented Jm10,1911.

5 SHEETS-SHEET 1 R. K. LE BLOND & W. F. GROENE.

GEARING FOB LATHES, 6w.

APPLICATION FILED JUNE 18, 1909.

980,973. Patented Jan.10,1911.

5 BHEETS-SHEET.2.

/ Qktoumq R. K. LE BLOND & W; F. 'GROENE- GEABING FOB. LATHES, &0.

APPLICATION FILED mm: 18, 1909.

Patented Jan. 10, 1911.

5 BHBETS-SHEET 3.

ELL

BH'K. LE BLOND' & W. F. GROENEL' GEARING FOB. LATHES, 6w. APPLICATIONrILnn JUNE 18, 1909.

Patented Jan. 10,1911.

5 SHBETSFQHEET 4.

R. 11.11.11 31:01:11 & w. 1"; GROBNB.

GBABING FOR LATHES, 61o. APPLICATION HLEDEJUHE 1a, 1909.

Rimmed Jan; 10. 1911.

5 SHEETS-SHEET s.

STATES P TENT oFF cnf momma: K. LE 31mm mm mm 1*. anon-1m, orcmcnrim'rr, omo, assrelions TO B; K. LE BLOND TQOL-CQ, 01

Application med June is, 1909. Serial No. 502,868.

OHIO. v

GEABING FOB LATER, M.

980,973. Specification of Letters Patent.

To all whom it may concern:

Be it known that we, RICHARD K. LE BLOND and WILLIAM F. GBOENE, ofCincin nati, county of Hamilton, and State of Ohio,

have invented a new and useful l mprovement in Gearing for Lathes, &c.,of which the following is a specification.

This invention relates to feed and speed changing mechanism for machinetools, and

is particularly designed as an improvement on the devices covered byLetters Patent- 763,770 and 788,657.

The invention has ing the transmission'from the cone of gears directlyand entirely within the feed box.

A further object is to provide-an improved system of change gearsbetween the spindle and the drive gear, whereby the feeds and threadscan be compounded and both the metric and Whitworth systems of threadsobtained.

In carrying outthe present invention, we

multiply the transmission from the cone of I gears employed in theabove-mentioned patents four times; or in other words, we use this conefour direct ways, the mechanism for obtaining these results beingentirely within the feed box.l The result obtained by the presentarrangement is a series of 36 changes in the feed, commencing at lowspeed and-rising step by step to high speed,

the said changes controlled by a movable yoke carrymg an intermediategear.

whereby connection is made between a constantly driven pinion and anyone of the series of stepped gears forming the cone, and by a lever andshifting mechanism which controls the interm V of a set of gears in sucha manner as to o tain four-differing for each change in the cone gears.The invention will be hereinafter fully set forth-and particularlypointed out in the claims.

In the accompanying drawingse-Figure '1 is a diagrammatic viewillustrating the arrangement of gearing contained in the feed boxtogetherwith the driving gear for the same. Fi 2 'is an end elevation ofa lathe showing t e arrangement of gearing from the spindle to the feedbox. Figs. 3, 4, 5 and 6 are diagrams of different arrangements ofgearsbetween the spindle and feed box for cutting-various threads. Fig. 7 isa front i ing. Mounted in said casing is asha for its object theproduction of improved means for multiplyspring lockin .shaft (Z.

' 2. gears,

elevation of the feed box. Fig. asset-ionon line 88, Fig. 7. Fig. 9 is arear elevation of the feed box. Fig. 10 is 2113011011?! emcimmrr, 0310,A GOBPOBA'IIONOF Patented Jamie, 1911; v

plan view of the same. Fig. 11 is a View of the index plate. Fig. 12 isa view of a slight modificatifin.

e erring to t e drawin ':--A designates the feed box which is in tliiform of a rectangular casing provided with a longitudinal'opening a inits front, an index plate a, being secured above and adjacent said 0encarrying an elongated pinion b and provided with a box-gear b whichintermeshes with the gearing from the spindle of the machine in a mannerto later described. The pinionb'is located within a sleeve 12 fixed inthe ends of the box A and slotted at its rear side to permit of theengagement of a gear b 'carried by an arm 72* of yoke b I mounted toslide upon said sleeve 12 and arranged torevolve in alimited are; aroundsaid sleeve. The motion of revolution and also the sliding movement ofthe sleeve are controlled by a handle 6 provided with a pin adapted toenter openings C in sai sleeve and to locate the yoke 12 and gear'lf' inoperative relation to a series of gears D, D upon and driving theMounted adjacent shaft d is a countershaft E provided with four gears e,e, e and e of different sizes, the first vmentioned gear e ion (1'secured to shaftd. The gear 6 meshes with a sliding pinion f on the feedshaft F,

and formed with thesaid pinion f are gear wheels f, 7' all constructedto slide on said shaft F and to drive the latter through a splined key iThe normal speed is obtained by meshing pinion f with gear e. The secondspeed by sliding the gear into .mesh with gear e and simultaneous ydisenggging gear 0 and pinion f. The third sp v is obtained by engaginggear f with and the fourth speed is obtained by the clutch faces f ofgear f into engagement with the corresponding faces f of a pinion .fnormally in mesh with the pinion e From the foregoing it will beunderstood that there are nine changes of speed brought bringing beingconstantly in mesh with a pinabout by shifting'the gear I) with relationto the cone gears and that these changes are multiplied by four by meansof the pinions and gears c, e, 6 e ,f, f, f and f. The carrier uponwhich plnions f, f and f are mounted is shifted by means of a 5yoke Gsecured to a rock-shaft 9, said shaft being operated bymeans ofa crankhandle 9. Said handle is provided with a spring locking ping adapted toengage recesses 3 1n the casing, whereby said carrier is held m thedesired osition.

The spin e gear H is mounted upon the spindle in the usual manner,andthe usual reversing gears h, h are arranged adjacent I thereto, beingmounted in a reverse plate h reversing gears h, 15., whereby movement istransmitted to-said stud from said spindle.

Stud it projects through gear It and is arranged to receive change gearsfor special threads. Meshing with the pinion Z) is a quadrant gear 72.mounted upon a suitable quadrant or carrier it which is movable to bringsaid gear it into mesh with gear if. It will be observed that the hubson the quadrant gear 72., the reverse gear and the box gear bare allelongated so that they take up the equivalent of twice the space of theface of the gear. This arrangement peri mits of the placing of changegears upon said hubs, or the reversing of the gears for In Fig. 3, wehave illusv compounding. trated the dlrectdrive to the feed box forcutting standard threads and feeds as shown by the index plate. Fig.4c'illus'trates the arrangement for obtaining English or Whitworththreads with a metric lead screw.

Fig. 5 illustrates the combination for obtaining metric threads with anEnglish lead screw. Fig. 6 shows the system of .compounding for specialleads.

In Fig. 12 we have shown a modification of the cone-gear arrangement. Inthis form the cone shaft 6! is elongated as indicated at Z and providedwith the pinions i 6, 11 2' corresponding with the pinions e, c e c ofthe countershaft E. The driving shaft B and the feed shaft F and theirvarious gears and pinions retain the same arrangement as in thepreferred form and the operation is identical.

Having thus fully described our invention, what we claim as new anddesire to secure by Letters Patent of the United States is 1. In a feedor speed changing mechanism for machine tools, the combination of a feedbox, a series of gears of different diameters mounted in said box, andforming a cone or stepped series,'a driving gear, means for selectivelyengaging said. driving gear and said series of gears, a feed shaftexsaid feed box, a countershaft mounted in teams 'feed box and driven bysaid changeable speed gearing andspeed changing mechanism carried bysaid countershaft andsaid feed shaft and cooperating to multiply thechanges in speed of the first mentioned speed changing gearing;

3. In a feed or speed changing mechanism for machine tools, thecombination of a feed box, changeable speed gearing mounted therein, afeed shaft projected into said feed box and driven by said changeablespeed gearing, a plurality of gears of different sizes mounted on saidcountershaft, and selectively operated means for operatilveilyconnecting said gears with "said feed s a t.

. 4. In a feed or speed changing mechanism for machine tools, thecombination of a feed box, main changeable speed gearing mountedtherein, a feed shaft, and supplemental speed changing gearingcomprising a counter shaft driven by said main changeable speed gearinand gears carried by said counter shaft an said feed shaft, the gears onsaid feed shaft being slidablvmounted.

5. In a feed or speed changing mechanism for machine tools, thecombination of a feed box, main changeable speed gearing mountedtherein, a feed shaft, and supple-. mental speed changing gearingcomprising a counter shaft driven by said main changeable speed gearingand gears carried by a said counter shaft and said feed shaft, the gearson said feed shaft being slidably mounted, and means for independentlyoperating said main and supplemental 1115 change speed gearing. I 6. Ina feed or speed changing mechanism for machine tools, the combination ofa feed box, main changeable speed gearing mounted therein, a feed shaft,and supple- 1 mental speed changing gearing comprising a counter shaftdriven by said main changeable speed gearing and gears carried by saidcounter shaft andsaid feed shaft, said supplemental speed changinggearing also in- 1 eluding a selectively operated slidable membermounted on said feed shaft and controlling said supplemental changespeed gearing.

7. In a feed or speed changing mecha- 1 nism for machine tools, thecombination of a feed box, main changeable speed gearing mountedtherein, a feed shaft, and supplemental speed changing gearingcomprising a counter shaft driven by said main changeable speed gearingand gears carried by said counter shaft and said feed shaft, saidsupplemental speed changing gearing also including a slidable membermounted on said feed shaft and controlling said supplemental changespeed gearing, means for selectively adjusting said member, and meansfor locking said member in any selected position.

8. In a feed or speed changing mechanism for machine tools, thecon'lbination of a feed box, main changeable speed gearing mountedtherein, a feed shaft, and supplemental speed changing gearingcomprising a counter shaft. driven by said main changeable speed gearingand gears carried bysaid counter shaft and said feed shaft, saidsupplemental speed changing gearing also including a slidable membermounted on said feed shaft. and controlling said supplemental changespeed gearing, a rock shaft, an arm carried by said rock shaft andengaging said slidable member, and an operating handle for said rockshaft.

9. In a feed or speed changing mechanism for machinetools thecombination of a feed box, main changeable speed gearing mountedtherein, a feed shaft and supplemental speed changing gearing comprisinga counhandle for said rock shaft, and a spring locking pin carried bysaid operating handle.

10. In afeed or speed changing mecha-. nism for machine tools thecombination of a spindle gear, a, box gear, and gearing connecting saidbox gear and said spindle gear said gearingincluding reverse gears and aquadrant gear, said reverse gears, quadrant gear and box gear being eachprovided with elongated hubs to receive translating gears. 11. In a feedor speedchanging mecha nism for machine tools, the combination with amain speed changing mechanism, of a. box gear driven thereby, a spindlegear, and gearing connecting said box gear and said spindle gear, saidgearing including reverse gears and a quadrantgear, said re -versegears, quadrant gear and box gear being each provided with elongatedhubs to receive translating gears.

12. In a feed or speed changing mecha- I nism for machine tools, thecombination with a mam speed changing mechanism,

means for multiplying the changes thereof,

and a'box gear for driving said speed changing mechanism, of a spindlegear, gearing connecting said spindle gear and said box gear, saidgearing including reverse gears, and. a quadrant gear for driving thebox gear at variable speeds.

13. In a feed or speed changing mechanism forv machine tools, thecombination with a main speed changing mechanism. means for multiplyingthe changes thereof, and a box gear for driving said speed changingmechanism, of a spindle gear, and means interposed between the spindlegear and the box gear for driving the latter at variable speeds. the hubof said box gear being elongated. I

14. In a feed or speed changing mechanism for machine tools, thecombination with a main speed changing mechanism. means for multiplyingthe changes thereof, and a box gear -for driving said speed changingmechanism. of a spindle gear, and gearing connecting said spindle gearand said box gear. said gearing including reverse gears and 'a quadrantgear for driving the boxgear at variable speeds, the hubs of I saidreverse gear, said quadrant gear, and said box gear being elongated.

In testimony whereof we hereunto set our hands this 16th day of June1909, 'in the presence of twoattesting witnesses.

, RICHARD K. LE BLONI). WILLIAM F. GROENE. Witnesses: v

FRED LE BLOND, WILSON KINSEY.

